tThe wheat starch was investigated, before and after exposure to the argon and oxygen glow dischargeplasma, without any added chemical reagents, using a novel media polarity functions method. The mech-anisms of modification of starch in plasma discharge irradiation were explained using some methods suchas; NMR, IR spectroscopy, Kamlet–Abboud–Taft polarity functions (specific and nonspecific interaction)of modified starch. The starch modification, by plasma treatment, shows valuable changes with plasmagas and relative ionized or active species. Characterizations indicate that argon glow discharge plasmaincreases crosslink in C-2 site of starch. Also, oxygen plasma discharge irradiation tends to oxidize the OHgroup in C-6 site of carbonyl group. Furthermore, the reported mechanisms show the highest efficiency,because of the stereo-chemical orientation of active sites of starch and plasma potential of wall in plasmamedia.
کلید واژگان :Wheat starch,Characterization,ModificationPolarity parameterGlow discharge plasma
ارزش ریالی : 600000 ریال
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